1D, 2D integrated Flood Risk Mapping (Incheon-gyo Catchment)

2007. 8. 20Team RED

Seongjoon BYEON Myeongsoo HAMMichele ROMANO K. Shobha YADAV

Masahiko TERAZONOADVISER : Gyewoon CHOI

CONTENTS

HYDROASIA TEAM-RED

INTRODUCTION

OBJECTIVES OF STUDY

PRE-PROCESSING WITH GIS

URBAN DRAINAGE MODEL SETUP

MIKEFLOOD MODEL SETUP

ANALYZING RESULTS

CONCLUSION

FURTHER PLAN

HYDROASIA TEAM-RED

HYDROASIA TEAM-RED

Leader : Seongjoon Byeon

Nationality : Korea

The date of Birth : December 13, 1979 (Age : 27)

University : Incheon Regional Environmental Technology Development Center, National University of Incheon, University Nice Sophia-Antipolis

Major : Civil & Environment Hydraulics

HYDROASIA TEAM-RED

Member : Myeongsoo Ham

Nationality : Korea

The date of Birth : August 15, 1981 (Age : 25)

University : Incheon Regional Environmental Technology Development Center, National University of Incheon

Major : Civil & Environment Hydraulics

HYDROASIA TEAM-RED

Member : Shobha Kumari Yadav

Nationality : Nepal

The date of Birth : August 20, 1980 (Age: 26)

University : Tropical Marine Science Institute, National University of Singapore

Major : Environmental Management

HYDROASIA TEAM-RED

Member : Michele Romano

Nationality : Italy

The date of Birth : February 11, 1978 (Age : 29)

University : Tropical Marine Science Institute, National University of Singapore, Technical University of Bari

Major : Civil & Environmental

HYDROASIA TEAM-RED

Member : Masahiko Terazono

Nationality : Japan

The date of Birth : September 28, 1983 (Age : 23)

University : Kyoto University

Major : Civil & Environmental

HYDROASIA TEAM-RED

Adviser : Gye woon Choi

Nationality : Korea

Professor of National University of Incheon

Executive director of Incheon Regional Environmental Technology Development Center

OBJECTIVES OF STUDY

Main purpose

– Runoff analysis based on rainfall data and DEM

– Mapping Flood Risk

– Comparison with Real Flood

– Comparison with results simulated with different parameters and model

– To find out optimized Storm Performance

OBJECTIVES OF STUDY

Making good experiences

– Collaborating on a study with foreign students using the internet as a common working and communication platform

– Sharing knowledge and skills

– Experiencing the ‘Technological Culture’ for a sustainable water management

Production of Weekly Reports

Production of Documents

and easy tutorials

UPLOADING THE PLATFORM

Flow chart Overall frame work

MIKE FLOOD

Set up

Coupling

Preprocessing for MOUSE

Run Model

Check the result and evaluation

Set up

Validation

MIKE21 Model

Overall frame work

MOUSE Model

Set up

ValidationPreparation

GIS

Rainfall Analysis

INTRODUCTION

Incheon city– Area : 1002.07 ㎢

– Population : 2,686,022 persons

– Density of population : 2,680 persons/ ㎢

– Location : • A gateway to Northeast Asia with both international p

ort and international airport in its hand

• Incheon is located in the mid-west Korea peninsula abutting the Yellow Sea.

• A city located 28km from the nation’s capital, Seoul, lies at 126° 37´ of east longitude and 37° 28´ of north latitude.

• San Francisco, Washington, Madrid, and Teheran are found on the same latitude. `

INTRODUCTION

Incheon-gyo Catchment

석남배수분구

주안배수분구

2간석 배수분구

1간석 배수분구

도화배수분구

송현배수분구

홈플러스

현대아파트

가좌하수처리장

굴포 배수구역

승기 배수구역

학익 배수구역

인천교매립지 펌프장

가좌 배수구역

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• Area : 3,091.7 ha• Elevation : 5.4~24.0 m (EL+) 33.1% of area is less than 7m (EL+)• Avg. of Slope : 0.01 %• Avg. of Rainfall : 1,702.3 mm/year• Landuse : Residence, Market, Industrial and Green (Hill, Agriculture)

Location Residence Market Industrial Green Total

Incheon gyo CoveredOpenchannel

Left 743.3 145.9 226.3 77.1 1,183.6

Right 364.8 47.8 353.3 231.3 997.2

Seoknam Canal 204.4 38.4 357.9 310.2 910.9

Total 1303.5 232.1 937.5 618.6 3,091.7

PRE-PROCESSING WITH GIS

A GIS is a computer system capable of capturing, storing, analyzing, and displaying geographically referenced information

GIS can display the Earth in realistic, 3D perspective views & animations that convey information more effectively

The main purpose of GIS analysis is to study the topographical characteristics of the study area which is further used for flood modelling

PRE-PROCESSING WITH GIS

Clipping map as catchment shape

Making Terrain map with interpolation

PRE-PROCESSING WITH GIS

Making grid-Raster data set

Exporting data set as Ascii file

PRE-PROCESSING WITH GIS (ArcScene)

3D representation of building within catchment area

PRE-PROCESSING WITH GIS (ArcScene)

3D representation of road network within catchment area

INTRODUCTION-MIKE FLOOD

MIKE FLOOD

– Hydrodynamic Integrated model with 1D and 2D

– The result of either 1D or 2D model can be transferred as input of another model

1D Model

– MOUSE : For Analyzing Urban Sewage

– MIKE 11 : For Analyzing Open Channel Flow

2D Model

– MIKE 21 : For Analyzing surface complicated overflow

INTRODUCTION-MIKE FLOOD

Rainfall Runoff

Surface Runoff Overflo

w

Figure 1 Application of Standard Links

Re-inflow after floodFlow-capacity excess

Sewage/Rainfall water

Sewage/Rainfall water

URBAN DRAINAGE MODEL SETUP

Importing Network system data into MOUSE

Setting up Urban Drainage model with MOUSE

Validation

URBAN DRAINAGE MODEL SETUP

Import Ascii data-set as bathymetry

Setting up Urban Bathymetry with MIKE21

Validation

Option Value

Time Step1secMax Cr=0.4

Grid Size 10m

MIKEFLOOD MODEL SETUP

Setting up MIKE Flood model

Coupling : Link MOUSE Manholes to MIKE21

Preprocessing for MOUSE Model

Running Model

Check the results

Catchment boundary

Gajwa-WWTP

Cityhall

Ganseok st.Juan st.

Incheon gyo

Pump Station

Flooded area

ANALYZING RESULTS

ANALYZING RESULTS

Comparing the Result

(Modeled VS Reported)

Hwasu Reservoir basin

Around Dohwa and Juan metro station

Seoknam Canal Basin

Gajwa girls juniorhigh

Sipjeong & Ganseok dong

Seoknam Canal

Hwasu Reservoir basin

Around Dohwa and Juan metro station

Seoknam Canal Basin

Gajwa girls juniorhigh

Sipjeong & Ganseok dong

Seoknam Canal

ANALYZING RESULTS

Result Video

CONCLUSION

The Simulation has been built through web-collaboration of Team-Red

Model has been run successfully with good looking result

The advantage mapping with 2D surface runoff modeling could be found as following

– The terrain characteristic can be considered

– The lag due to the puddle, discontinuity can be considered

– The magnification of result can be prevented with distribution of flooded water to another manhole

This study is expected to be continued as following further plan

FURTHER PLAN

Applying Building layer map

Investigating the way to apply runoff coefficient

Applying RTC gate and pump

Discussion of 2D Runoff result

Discussion of Precipitation Intensity

Discussion of Solution

Comparison with results simulated with different parameters and model

Lets take pride in being

TEAM RED !!!